pgsql: Corrected CVS entry: --only-analyze mode is for _vacuumdb_, not

Log Message:
-----------
Corrected CVS entry:

--only-analyze mode is for _vacuumdb_, not pg_dump.

Modified Files:
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pgsql/src/bin/scripts:
vacuumdb.c (r1.30 -> r1.31)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/bin/scripts/vacuumdb.c?r1=1.30&r2=1.31)